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From:   Ulf Hansson <ulf.hansson@linaro.org>
Date:   Tue, 18 Apr 2023 10:32:09 +0200
Message-ID: <CAPDyKFruZOP65k0SEEmCGtopp8ywJA92ChGZs2ZR=nVxqUC0OQ@mail.gmail.com>
Subject: Re: [PATCH 2/2] input: imx_sc_key: add wakeup support
To:     Peng Fan <peng.fan@nxp.com>
Cc:     Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
        "krzysztof.kozlowski+dt@linaro.org" 
        <krzysztof.kozlowski+dt@linaro.org>,
        "shawnguo@kernel.org" <shawnguo@kernel.org>,
        Aisheng Dong <aisheng.dong@nxp.com>,
        "linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
        "kernel@pengutronix.de" <kernel@pengutronix.de>,
        "festevam@gmail.com" <festevam@gmail.com>,
        dl-linux-imx <linux-imx@nxp.com>
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On Wed, 12 Apr 2023 at 17:58, Peng Fan <peng.fan@nxp.com> wrote:
>
> +Ulf
>
> > Subject: RE: [PATCH 2/2] input: imx_sc_key: add wakeup support
> >
> > > Subject: Re: [PATCH 2/2] input: imx_sc_key: add wakeup support
> > >
> > > On Thu, Mar 23, 2023 at 05:31:41PM +0800, Peng Fan (OSS) wrote:
> > > > From: Peng Fan <peng.fan@nxp.com>
> > > >
> > > > Add support for waking up from system wide suspend.
> > > >
> > > > Signed-off-by: Peng Fan <peng.fan@nxp.com>
> > > > ---
> > > >  drivers/input/keyboard/imx_sc_key.c | 2 ++
> > > >  1 file changed, 2 insertions(+)
> > > >
> > > > diff --git a/drivers/input/keyboard/imx_sc_key.c
> > > b/drivers/input/keyboard/imx_sc_key.c
> > > > index d18839f1f4f6..234f23cf9990 100644
> > > > --- a/drivers/input/keyboard/imx_sc_key.c
> > > > +++ b/drivers/input/keyboard/imx_sc_key.c
> > > > @@ -151,6 +151,8 @@ static int imx_sc_key_probe(struct
> > > platform_device *pdev)
> > > >   priv->input = input;
> > > >   platform_set_drvdata(pdev, priv);
> > > >
> > > > + device_init_wakeup(&pdev->dev,
> > > device_property_read_bool(&pdev->dev, "wakeup-source"));
> > > > +
> > >
> > > I wonder - could we move this to the device core?
> >
> > I see lots device drivers parse wakeup-source, so I also follow That. Not sure
> > whether could move this feature to device core, but anyway I could give a
> > try.
>
> Do you think it is feasible to move device_init_wakeup into device core
> part?

Not sure it would really improve things that much. Subsystems/drivers
need to make additional configurations based upon whether this DT
property is set anyway.

Perhaps an option is to make this a part of the common input subsystem
helper functions instead? Other subsystems do this, but I am not sure
how feasible that would be in the input case.

Kind regards
Uffe